package gitdemo1.git3.tree;

public class Test {
    int a=2;
    public static int b=3;

    public int sum(){
        Test.b=4;
        return 2;
    }

//    public static int summ(){
//
//    }

    public static void main(String[] args) {
        String s="aaa";
       // s="bb";
        System.out.println("hello");
    }

}
